Although I haven't concentrated on Indian arrowheads for over ten years, I still have my collection around somewhere.
Got my first metal detector 1967, and detected all over the world while working for the airlines, while doing so, I would visually pick up some arrowheads.
Also while looking for Rubies, and saphires in the Cowee Valley of NC, I would come upon some Indian artifacts during the early 1970's.
I hate hobbies, don't you.